Air cleaner for automobile engines and the like



Dec. 1, 1925.

. F. S. OREM AIR CLEANER FOR AUTOMOBILE ENGINES AND THE LIKE Filed May 29, 1924 E .1.

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mi M f Patented Dee-1,1925.

.- UNITED STATES PATENT: OFFICE.

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' Application filed May 29, 1924. Serial No. 7103s).

To all whom, itmog concern:

Be it known that I, FREDERICK STRATTNER OREM, a citizen of the United States, and a resident of Baltimore, in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Air Cleaners for Automobile Engines and the like, of which the following is a specification.

The invention relates to air'cleaners foruse in connection with carbureters, and particularly for'automobile engines, -and it con sists in the features and, combination and an rangement of parts hereinafter described and,

particularly pointed out in the claims.

In the drawings Fi re 1 is a central vertical section of the c eaner device, and Y Figure 2 is a horizontal sectional view on. the line. 2--2 of Fig. 1,.only one-half of the device bein illustrated in this figure.

In these drawings 1 indicates the cylindrical .body member of the casing having a top 2 which forms a closure for the upper end of the body, and a bottom member 3 which involves a spider formation of any suitable form to provlde'an inletor inlets at 4 for the dust-laden air. The outlet for the cleaned.

air is'shown at 5, this being arranged centrally of the device and the openings 4 bein disposed around this central outlet.

- Within the chamber and near the upper end of therod 8 I lustrated, of continuous fabric 12 com ing material is interposed and this thereof there is a plate 6 held by nuts 7 on a central rod '8, which passes through the topof the casing, where 1t is screw-threaded to receive a nut 9 which clam s the top to the main body of the casing. he lower end in a part 0 the lower structure, this spider I being directly connected with a flange or rim 11 extending up from the bottom member and. held thereon in any suitable manner. Between the'inlet and the outlet the screenin the particular form of the invention ilosed ' of outer and inner substantially cylin rical portions 13 and 14, these portions being connected by conical portions of the fabric 1 structure, presenting incross section the zigzag formation shown .in Fig. 1, made up of the stretches 15, 16, 1 7'-'andj18. These intermediate zig-zag stretches are supported by spiral springs and the cylindrical portions of the cleaning fabric are also supported by spiral springs. These springs include asses through a spider 10 form- :170 all the cylindrical outer and inner portions and consists,

the re-entrant spaces formed by the zig-zagv the outer spring 19, the inner spring 20, and the intermediate sprin s 21 and .22,

which stretch or support t e intermediate conical-or zig-zag portionswof the, 1 fabric.

The spring 19 finds a bearing against the under side of the upper plate 6, andthis plate also afiordsa' bearing for thespring 21,'-whereas-the two springs 20 and 22 find a 'bearin against the bottom. of the device and are ree at their'upperends. The fabric' is stretched around or over these springs and its edges are attached respectively to the plate 6 and to the bottom 11, and in order to form this attachment clamping rings 23, '24 are rov ded which grip the fabric beemselves and the adjacentlring. or

The formation of the cleaning fabric, which preferably is continuous," into thevsubstantially cylindrical inner and outerf'p'or-Q tions and the intermediate zig-zag, connectthe fabric. A ring is rovi ed at 25 to rest on the upper coil of t e s ring 20 and the fabric is turned around t is rmgto get a support at this oint. The springs 20 and 22v are free at t eir upperends, while the springs .19 and 21 are free at their lower ends, and the-fabric passes over these free ends of the springs and is kept taut by the action of the springs tending to stretch the. fabric-in reverse directions. In the o erationof the device the dust-laden air will enter the openings 4; and in order to get. to. the outlet, the air must pass throu h the'fabric and it finds access ort1ons.of this fabric by reason of portlons, and by reason of this construction the device has large capacity for taking car of a proper degree of air flow.

Furthermore, in an automobile, the springs, being subjectin the useiof this apparatus ing portions providesthe re-entrant spaces l ed to more or less vibration, due to the running of the car, will constantly a ply a learing force to the fabric, alternate y renderin the same taut and loose in more or bration of the 'springsflmd this will serve less egree', according tothe' degree of vito dislodge the accumulations from the outer surface of the fabric, and these accumula tions will be free to fall through the inlet openings, and only the cleaned air will pass from the outlet 5.

I claim as my invention:

1. In an air cleaner for automobiles, a casing having two opposed supports, a spiral spring seated on one support and extending towards, but free from contact with the other support, a spiral spring seated on said other support and extending towards but free from contact with the first support, said springs being concentric with each other, a tubular fabric supported at its opposite ends on said supports, and having its intermediate portion extending over the said springs in zig-zag form, said casing having an inlet and an outlet for air, the said fabric being interposed between the inlet and outlet, substantially as described.

2; In combination, a casing, a supporting plate 6 within saidcasing, a ring shaped sup port 11 coaxially disposed with said plate, and 01 sin'allerdiameter than the plate, a casing, a rod connected with the plate, and the ring, and removably connected with-the casing, a spiral spring supported at one end against the plate, and extending towards the ring with its other end unsupported, a spiral spring supported at the ring, at one end, and having an unsupported end adjacent the plate, a tubular. fabric having its ends attached' to the ring and to the plate and its intermediate portion extending over the springs, said plate forming a closure at one end for the space within the tubular fabric and the ring forming an outlet for clean air, said casing having an inlet for the air between which and the outlet said fabric is interposed, substantially as described.

In testimony whereof, I afiix my signature.

FREDERICK STRATTN ER OREM. 

